Surface Chemistry

Surface Chemistry

Question

According to Freundlich adsorption isotherm, which of the following is correct?

  • straight x over straight m space proportional to space straight p to the power of 0
  • straight x over straight m space proportional to space straight p to the power of 1
  • straight x over straight m space proportional to space straight p to the power of 1 divided by straight n end exponent
  • All of the above are correct for a different range of pressure

Answer

D.

All of the above are correct for a different range of pressure


straight x over straight m space equals space kp to the power of 1 divided by straight n end exponent space left parenthesis in space between space low space and space high space pressure right parenthesis

When comma space straight n equals space 1 space straight x over straight m proportional to straight p to the power of 1 space left parenthesis inlower space pressure space range right parenthesis
space straight x over straight m space equals straight k space left parenthesis independent space of space pressure right parenthesis
Thus comma space straight x over straight m proportional to space straight p to the power of 0 space left parenthesis in space high space pressure space range space when space saturation space point space is space reached right parenthesis

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